Bilecik province, located south eastern side of Marmara Region. Bilecik lies on the junction point of Marmara, Black sea, central Anatolia and Aegean regions. City surrounded with neighbour provinces; Bolu and Eskisehir in the East, Kutahya in the East, Bursa in the west, Sakarya in the north.

The Surface area of the Bilecik is 4307 square kilometers and population of the city is approximately 200.000 .